You may have the original Resident Evil 5 (non-gold) and wish to see how the move performs on the game and possibly want to know whether it is worth buying the gold edition.
Well this is one way you can find out as well as have an extra move demo available to you. It is only available on the Japanese PSN store for some odd reason but most of it is in English.
Use YouTube to follow a tutorial on how to make a Japanese PSN account if you have not done so already.
Then go onto the demo part by a bit of random luck you should find Playstation move icon and within that the Biohazard 5 (which is the Japanese name for the game) game title picture.
Apologies if the UK Resident evil 5 demo has been updated to allow move function but as it wasn't under the move section - I assume it isn't.